Angle-indicator.



o. R. cAssELL. ANGLE INDICATOR. APPLICATION FILED MAY 10, V1911.

1,038,291, Patented Sept. 10, 1912.

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0i R. CASSELL.

ANGLE INDICATOR.

APPLICATION FILED MAY10`, 19114 Patented Sept. 10, 1912.

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OSCAR ROBT. CASSELL, 0F NEW YORK, N. Y.

ANGLE-INDICATOR.

Specification of Letters latent.

Patented sept. 10, 1912;

Application filed May 10, 1911. SeriaI No. 626,357.

To all'l lwhom it may concern Be it. .known that I, OSCARR. Cassani., a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Angle-Indicators, of which the following is a specification.

This invention relates Vto indicating and registering devices and particularly to that class of devices which is adapted toindicate the angle of aerial craft.

The object of the invention is to provide a device of this character which will effectuall 1 indicate the different angles of an aeroplane or dirigible during its fiight automati eallyfand to register and indicate dangerous angles eren though an accident may have happened.

In practice preferably two of these instruments are used on the aeroplane or like device.y so that the aviator may determine the angle of the right or left wing or the front er rear of the machine without depending upon his sense of feeling.

Further objects of the invention Will appear as the following specific description is read in connection with the accompanying drawings,` which form a part hereof, and in which 1- Figure 1 is an elevation of the device with lthe parts in balance indicating position. Fig. 2 is a similar view showing the parts arranged in registering position after an abnormally erratic flight. Fig. 3 is a vertical section taken on the line 3-3 of Fig. 1. F a is a detail side elevation of one of the indicating and registering pointers. Fig. 5 is an enlarged section through one end thereof. I

Referring more particularly to the drawings, 1 represents a ring having suitable `grmluations 9. arranged around the circumference and extending in opposite directions This ring is provided w-ith attaching members 4 hy which ihe-device can be mounted in any position upon the machine and the inner side of the ring has formed therein a hallway in which suitable balls 6 are mounted. T he 'inner ring is shown at 7 and is also provided with a hallway 8 to receive the balls (E. This ring has extending across the same a rod or spoke 9 which is weighted, as shown at 107 and is provided with a point-er 11 m'erhanging the outer ring so as to point to the graduations thereon. rlhe upper end of the spoke or rot 9 projects beyond the ring 7 and overlles the ring 1 and is provided with a spring pressed plunger 12 carried in a lateral head 13 and adapted to engage 60 suitable apertures 14 formed in the rim 1, preferably at the a5@ point.

The spoke 9 has mounted therein a laterally projecting stub shaft. 15 upon which plurality o-f pointers 16, 1T and 18 is jour- 65 naledyeach provided with a weight 15)' at its lower end and each operated independently over graduated segments Q0, 21 and 22 carried by a cross -bar 23 secured to the outer ring. .Each of the segments 20, 21 and is 70 provided with suitable graduaticns 24 and at the O point on the segment 2O a pluralityv of holes 25 is formed. Similar holes Q6 are formed at the 'TOO points on the scale i1 and a single hole 27 is formed at each 90 75 pointo n the segment 22. The holes 25, Q6 and 27 are arranged on opposite sides of the zero point- 28 and each of the pointers 1G, 17 andlS is provided with a laterally extending head 29 having a spring. pressed 80 plunger 30 mounted therein to enga-ge the apertures and lock the pointers in operative position.

In practice the ring 1 is firmly secured t0 the machine and the machine assumes in its Hight or travel. The lower end of the spoke 9 being weighted normally keeps this spoke vertical and the pointer 11, hanging in the form of a pendulum, `operates over the graduations upon the ring.- If the machine is tilted forwardly,-

lrearwardly or'laterally in either direction to a danverous anglel sav 4.50 the srinfr l n zo a, 7 .p v pressed plunger 12 upon the extension ot -the spoke 9 will engage the first aperture 95 in the series 14.A This action then locks the wheel to the ring 1 and registers thel fact that the. machine has been tilted to one side at an angle of 150. The wheel 7 now beino` locked to the ring 1, the pointer 16 100 will egin to indicate the angle of position of the machine and if a (30 angle of incli nation of the wings of the machilie is reached in the same direction or in an opposite direction the plunger 30 on the pointer 105 will engage one of the holes 525 so as toloek the, pointer 1G. Then the pointer 16v is locked the arms 17 and 1S will be operated in a similar manner and the pointer 18 will indicate up to the 90 it will be locked in registering position. At this point the machine will probably assumes any position that 85 point at which time have overturned and the registering device will only show the positions assumed by the machine lin its flight after being picked up.

A suitable light 34 may be mounted upon the weight or table so hat the scale may be read at night. The ring is shown as supplied with two legs 31 and 32, so that.

' indicatingmember having a pointer to operate over the graduations on the supporting member, means to automatically lock the indicating member against movement in either direction to the supporting member when the pointer reaches a predetermined graduation thereon, and a pointer carried by the indicating member and adapted to operate over the graduated ser. les when the member is locked to the suppori ing member.

2. Ar angle indicator comprising graduated supporting member, an indicating member rotatably mounted thereon and having a pointer to operate over the graduations. means to automatically lock thc indicating member to the supporting member when the pointer reaches a predetermined point of graduation, a plurality of indicating scales carried by the supporting members, independent pointers for Said scales, and means carried by each pointer and adapted to cooperate with the' corresponding scale to automatically lock the pointers in succession as they reach predetermined graduation'points, together with weights on the pointers.

In testimonv whereof I atlix my signature in presence of two witnesses.

OSCAR ROBT. Witnesses EDWARD MONTGOMERY, JOHN W. I. VHITE.

CSS'ICLL.

Gopes of this patent may be obtained r ve cents each, by addressing the Commissioner of Patents,

v Washington, D. 0. 

